Rolsmith
I once had a very similar issue but on a very different car. Turned out to be the crank sensor.
Have you since driven car for any duration to see if fault re-occurs. On mine it did, and in fact it took me nearly four hours (for a 45 minute journey) to get home as the car was stopping every 5-10 minutes. I'd then have to then wait another 5-10 minutes before I could drive it again.
Cheers
I had this on a Polo GTI I had forgotten all about it, car ran perfectly between failures.
